428730026129 has 2 divisors, whose sum is σ = 428730026130. Its totient is φ = 428730026128.

The previous prime is 428730026119. The next prime is 428730026159. The reversal of 428730026129 is 921620037824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370909014529 + 57821011600 = 609023^2 + 240460^2 .

It is a cyclic number.

It is not a de Polignac number, because 428730026129 - 2²⁴ = 428713248913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428730026129.

It is not a weakly prime, because it can be changed into another prime (428730026119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214365013064 + 214365013065.

It is an arithmetic number, because the mean of its divisors is an integer number (214365013065).

Almost surely, 2^428730026129 is an apocalyptic number.

It is an amenable number.

428730026129 is a deficient number, since it is larger than the sum of its proper divisors (1).

428730026129 is an equidigital number, since it uses as much as digits as its factorization.

428730026129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 428730026129 in words is "four hundred twenty-eight billion, seven hundred thirty million, twenty-six thousand, one hundred twenty-nine".